Sim proxy that will unlock 2.28 baseband! I have it!
My supplier finally came through and gave me a bunch, I've tested them out by driving around from county to county and the signal remained strong and calls were clear along with text messages being delivered fast. So yea, it's possible now, phew!
These new chips will unlock the 2.28 baseband, so this is awesome news for those with bricked iphones that was updated through itunes and made their original unlock method invalid. PM me if you want to buy some, thanks.